Answer Posted / mahesh

call by value
int fun(int a,int b);
int fun(int p,int q)
{
temp=p;
p=q;
q=temp;
}
call by reference
int fun(int &a,int &b);
int fun(int *a,int *b)
{
temp=*a;
*a=*b;
*b=temp;
}
call by value is with values n call by ref with adresses n
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